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-rw-r--r--modules/FindQt4.cmake2
1 files changed, 1 insertions, 1 deletions
diff --git a/modules/FindQt4.cmake b/modules/FindQt4.cmake
index 52359172..56ba8f21 100644
--- a/modules/FindQt4.cmake
+++ b/modules/FindQt4.cmake
@@ -307,7 +307,7 @@ INCLUDE(MacroPushRequiredVars)
SET(QT_USE_FILE ${CMAKE_ROOT}/Modules/UseQt4.cmake)
-SET( QT_DEFINITIONS "")
+SET( QT_DEFINITIONS -DQT_USE_FAST_OPERATOR_PLUS -DQT_USE_FAST_CONCATENATION)
IF (WIN32)
SET(QT_DEFINITIONS -DQT_DLL)